Thermodynamic Analysis of 77 MW Cogeneration Power Plant

Abstract

Cogeneration technology has emerged as a viable and attractive option for process sectors with high heat requirements. This research presents an energy and exergy analysis of a 77 MW steam power plant. An extensive case study is conducted on the Vadinar Power Company Ltd. (VPCL, Nayara Energy) in Jamnagar, India. The plant's performance metrics, including component-wise energy loss, energy destruction, and exergetic efficiency, have been evaluated. The analysis reveals that the condenser accounts for the highest energy loss, with 45.5% being released into the environment. Additionally, the boiler is identified as the primary contributor to the system's largest energy destruction rate. Boilers have an energy efficiency of 42%; however, turbines are more efficient, with an energy efficiency of 72.05%. The primary cause of energy destruction in the boiler system is the significant amount of entropy generated in the combustion chamber during the combustion process.